WATCH: Lee Kwang Soo responds to Jo In Sung's challenge

As the video begins, we see the 190-cm (6 ft. 3 in.) tall actor sitting in a lotus pose. Lee Kwang Soo said, "It’s an honor to be a part of such a meaningful campaign, and I hope that through it, many will gain hope and strength.” We then see Kim Jong Kook enter menacingly with an ice bucket and totally chill Lee.

Oh, that looks really, really cold. Lee Kwang Soo sounded like he was shivering while he named three other lucky friends: Speed skater Lee San Hwa, actor Yoo Yeon Seok, and Kim Jong Kook, his Running Man mate and the one who just drenched him.

The rules for the ALS Ice Bucket Challenge state that if you are challenged, you have 24 hours to respond. You are supposed to donate $100 or record a video of you getting drenched with a bucket of ice and water. You can either do it yourself or have someone else dump the ice water over you. Many people still donate an amount of their choice after being drenched.

The American viral fundraising activity has spread to Asia. Read about and watch these other Korean stars taking on the challenge to support a worthy cause and spread understanding of an incurable and eventually fatal disease, also known as the "Lou Gehrig's Disease":